Locomotive frame



0 18 1927. A. w. BRUCE LOCOMOTIVE FRAME File d" Feb. 17, 1927 WITNESSES Patented Oct. 18, 1927 jfqsj ITED,

, ewes KIT-BRUCE, orimw'Yonx, m,

LOGOMOTIVE Flt-AME.

Application filed February 17,1927, Serial No. 168,921. I

My invention relates to the frames or bed members, applied in the constructlon of locomotive engines, for supporting the boiler and running gear upon the axles thereof, and acting as the means of 'transmis 'sion'jof the tractive effort 'exerted' bythe action of the ,pressureof steam {upon the pistons of the engines-from said pistons to the draw bars of the locomotives.

"Theobjectof my invention is" to provlde a fabricated structure ofsuch -type, which. as va nentirety, shall be of rigid,strong, and simple construction the individual members ofjWhich "shall be capable 'of'being readily formed in proper shape,'and machined and assembled at comparatively low cost; and in which the renewal or; repair of worn or broken parts may be conveniently and economically effected, f V U The improvement claimed is hereinafter fully setforth. J v

In the accompanying draw1ng: F1gure 1 is a'nisometrical viewer a locomotive frame, illustrating I an embodimentof my unv tion; FigJ'Q, a vertical transverse sect on, on the line a a of Fig. 1; Fig. 3, a partial'top or plan. viewj'Fig. 4, a vertical long tudinal section, on the line b b of Fig. 3;" and, F1gs. 5 and '6, isometrical views, illustrating modifications of structural detail. i

' In the practice of my invention, referring ,de scriptively to the specific embodiment thereof which is hereinexemplified, theleading and characteristic feature of novelty thereof is a fabricated locomotive 'frame structure,' herein illustrated as adapted for.

application'in a locomotive of the "mountain or 4-8-2 type, and compr slng' two counterpart side frame members, each hav 40 ing formed integral therewith, a plurality of cross tie sections, said sections o f'thetwo side frame members abuttin and thejside i. p frame members being r gidly secured one to the other, to constitute a completefabricated frame or bed structure,by'any suitable connecting means, as riveting,"welding,' lor bolts passing through the cross tie sections.' The invention also comprehends the association of other members, hereinafter set forth,"

with the basic structure above specifiedl Referring togthe drawing-each of thetwo counterpart side members of the frame comprises, 1n an integral part, a top rall, 1, pedestal ans, 1", depending from the top rail, in the usual manner, and intermediate plurality of cross tie sections,'1, is formed I together, to relieve the bolts from racking and are of such length that, when brought into abutment in, or substantially in, the 5 middlevertical longitudinal plane of the frame structure, the width of the "frame structure shall be that which is desired for itsv application in the particulardesign of locomotive in which it is to be applied; The cross tie sections, when so abutted, erase cured rigidly together, in the instance ex'emplified, by bolts, 2, passing through end flanges, l, on the sections, and iiu'ts,'2, but my invention is not limited to such specific connecting means, as the'conn'ection'ma be otherwise effected, as by riveting or wel'ing. The sections mayalso, if desired, bekeyed strains.

The specific form of the cross tie sections is not an essential of the invention, and they maybe'of any desired transversesection which, in the discretion of theconstructor, appears "most desirably adapted "to afford proper strength and rigidity, and to facilitate, in the manufacture "of Yeast metal frames, the operations of moulding and casting. In the instance herein illustrated, the cross ti'e' sections which are located above the pedestals, are'of inverted U form, in transverse sect-ion, with bolting flanges, l, on their abutting ends, and openings are formed intheir tops to reduce their, weight. j The cross tie section in front of the forward pedestals maybe of bar orfbox transverse" sectiomand those at the forward'ends of the side members oftheframe are adaptedtor the att aclnnentof 'a b'umper beam.

of the side members of'the fra1ne,,as indicated in dotted lines in Fig. 1, orIthe member-s ofsuch a rear frame', comprising two side members," 3, 3",each projecting from. one of the side members 'of the main frame I above: described, and {adapted to be connected at their rear-ends by inwardly projecting cross tie ectioned: eachcarrying a half draw bar pocket, 3, and secured together bolts, may be formed integral with the main frame structure above described, as, shown in Fig. 5.

F ig. 6 illustrates the application, to said frame structure, of a cylimler saddle, comprising two counterpart sections, 4;, 4, each of which is formed integral with one of the side members of the frame structure. The saddle sections are machined on their ends further from the side members, and are adapted to abut, and to be securedrigidly together by bolts, 4-5, passing through flanges, 4,", on their front and rear sides, and nuts. A steam cylinder, 5, and valve chest, 5?, are shown, in dotted lines, in Fig. 6, as formed integral with each of the side members of the frame, and it will be obvious to those familiarwith the construction of loco motives, that supports for valve gears, reversing mechanism, and other elements of the equipment of locomotives, may be snnilarly associatedwith the side members.

Among the advantages of my invention theremaybeparticularly noted the facility which it affords, when the frame is fabricated of cast metal, in simplifying and pen fecting the operations of moulding and casting the constituents of the frame structure, and in machining and assembling them. The side members being counterpart and connected in or near the middle plane of the structure, fewer bolts will be required, and

I ample bearing surface is. provided on the connecting flanges, to ensure a strong, rigid, and readily accessible structure. A further advantage is that in. the event of one side of the frame being seriously damaged by accident, especially in the case of cylinder attachments, that side only need be renewed, instead of requiring the substitution of an entirely new frame, as would be necessitated if a frame formed in a single castingwas concerned. The difficulty of making perfect castings of such character is so well recognlzed that they cannot be said to have been. yet developed to the degree of a successful commercial proposition. 1 I claim as my invention and desire tosecure by Letters Patent:

1. In a fabricated locomotive frame structure, the combination of two counterpart side members, each comprising, in an integral her; and means by which the abutting secpart, a top rail, pedestal jaws, depending therefrom, pedestal jaw connections, and

cross tie sections, each of whichprojects laterally from a pedestal jaw, and abuts against a counterpart sectlon on the other side memtionsare rigidly secured, one to the other.

2. In a fabricated locomotive frame structure, the combination of two counterpart side members, each comprising, in an integral part, a top rail, pedestal jaws, depending therefrom, pedestal jaw connections, and cross tie sections, each projecting laterally from a pedestal jaw, and h aving an end bolting flange, which abuts against a counterpart flange one section of the other side member, and bolts, passing through the bolting flanges and rigidly securing the abutting sections onevto the other.

3. In a fabricated locomotive frame structure, the combination of two counterpart side members, each comprising, in an integral part, a top rail, pedestal jaws, depending therefrom, pedestal jaw connections, and laterally projecting cross tiesections, of inverted U form, having end bolting flanges, each of which abuts against a counterpart flange on a section of the other side member; and bolts, passing through the bolting flanges and rigidly securing the abutting sections one to the other.

4. In a fabricated locomotive framestruo.

ture, the combination of two counterpart side members, each comprising, in an ntegral part, a top rail, pedestal jaws,depending therefrom, pedestal jaw connections, a half cylinder saddle, and laterally projecting cross tie sections, each of which abuts against a counterpart section on the other side member; and means by which the abutting cross tie sections and half saddles are rigidly securedtogether. t

6. A. locomotive frame side member, comprising, in anintegral part, atop rail, pedestal jaws, depend ing therefrom, pedestal aw connections, and cross. tie sections, each projecting laterally from a pedestal jaw, and adapted for abutment against a correspondingly located section on another side member. 7. A locomotive frame side member, com prising, in an integral part, a top rail, pedestal jaws, depending therefrom, pedestal jaw connectionsrand cross tie sections, each projecting. laterally from a pedestal jaw, and having an bolting flange, adapted for abutment against a bolting flange on acorrespondinglylocated section on another side member. a 1

8. A locomotive frame side member, comprising, in an integral part, a toprail, pedestal jaws, depending therefrom, pedestal jawconnections, and laterally projecting cross tie sections, of inverted U form, having end bolting flanges, adapted for abutment against bolting flanges of sections on another sidemember. 'l

9. A locomotive frame side member, com

prising, in an integral part, a top rail, pedestal jaws, depending therefrom, pedestal jaw connections, a half cradle or supplemental rear frame member, and laterally projecting cross tie sections, adapted for abutment against sections on another side member.

10. A locomotive frame side member, comprising, in an integral part, a top rail, pedes 15 prising, in an integral part, a top rail, pedestal jaws, depending therefrom, pedestal jaw connections, and cross tie sections, each projecting laterally from a pedestal jaw, and adapt ed for abutment against another side frame member. i V 12. A locomotive frame side member, comprising, in an integral part, a top rail, pedestal jaws, depending therefrom, pedestal jaw connections, and cross tie sections, each projecting laterally from a pedestal jaw, andhaving an end bolting flange adapted for abutment against a bolting flange on'a correspondingly located section'of another side frame member.

ALFRED W. BRUCE. 

